Calculator



FIG. 1 is a perspective view of the calculator;

FIG. 2 is an elevational view from the right side of the calculator;

FIG. 3 is an elevational view from the left side of the calculator;

FIG. 4 is a plan view of the front of the calculator;

FIG. 5 is a plan view of the rear of the calculator;

FIG. 6 is an elevational end view from the bottom of the calculator; and,

FIG. 7 is an elevational end view from the top of the calculator. 

The ornamental design for a calculator, as shown and described. 